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春秋兼用雄蚕新品种蒙草×红平4的育成 被引量:4
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作者 董占鹏 白兴荣 +9 位作者 廖鹏飞 黄平 丁善明 杨文 陈松 罗正宏 罗顺高 祝新荣 何克荣 孟智启 《西南农业学报》 CSCD 北大核心 2013年第2期820-825,共6页
采用回交法,利用常规家蚕品系红云回交改良家蚕性连锁平衡致死系材料平28,育成了新的日系家蚕性连锁平衡致死系红平4,并与限性皮斑中系品种蒙草组配成雄蚕杂交组合蒙草×红平4。经实验室和农村鉴定,蒙草×红平4的雄蚕率达98%以... 采用回交法,利用常规家蚕品系红云回交改良家蚕性连锁平衡致死系材料平28,育成了新的日系家蚕性连锁平衡致死系红平4,并与限性皮斑中系品种蒙草组配成雄蚕杂交组合蒙草×红平4。经实验室和农村鉴定,蒙草×红平4的雄蚕率达98%以上,健康易养,茧丝质优,产量和产值稳定,是一个优良雄蚕品种,适宜云南春季和秋季饲养。 展开更多
关键词 家蚕 性连锁平衡致死系 雄蚕品种 蒙草 红平4
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蒙草公司的幸福型企业文化形成路径
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作者 侯二秀 石晶 王媛媛 《企业管理》 北大核心 2015年第1期74-76,共3页
工作是人们生活的一个重要组成部分,人们幸福的程度与工作有着重大关系。因此企业需要加强自身的幸福建设,提高员工的幸福指数,承担相应的社会责任。 当今社会经济高度增长,文化日益繁荣然而有关调查显示,中国人的最大感受却是"累"... 工作是人们生活的一个重要组成部分,人们幸福的程度与工作有着重大关系。因此企业需要加强自身的幸福建设,提高员工的幸福指数,承担相应的社会责任。 当今社会经济高度增长,文化日益繁荣然而有关调查显示,中国人的最大感受却是"累":工作累,生活累,各种累。可见物质生活虽然提高,人们却没有感觉更幸福。 展开更多
关键词 蒙草公司 王召明 幸福型企业文化 主观幸福感 人力资源管理
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基于钻石理论模型的蒙草抗旱的行业发展对策研究 被引量:1
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作者 连怡婷 马军 《现代农业》 2016年第7期90-93,共4页
草原生态修复,是一项需要植物与科技手段双项驱动的综合的、高难度事业,蒙草抗旱致力于草原生态修复及干旱半干旱区的生态修复,并为其他生态修复提供基础。同时带动当地就业,助力区域经济发展。文章基于波特钻石理论模型就内蒙古和信园... 草原生态修复,是一项需要植物与科技手段双项驱动的综合的、高难度事业,蒙草抗旱致力于草原生态修复及干旱半干旱区的生态修复,并为其他生态修复提供基础。同时带动当地就业,助力区域经济发展。文章基于波特钻石理论模型就内蒙古和信园蒙草抗旱绿化股份有限公司Inner Mongolia Hotision&Monsod Drought-Resistance Greening Co.Ltd.(以下简称蒙草抗旱或蒙草Monsod Drought-Resistance)各发展要素进行分析,进而提出蒙草抗旱的行业发展对策。 展开更多
关键词 钻石理论模型 生态建设 蒙草抗旱 行业发展对策
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“蒙草”创新的三层进阶 被引量:1
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作者 王瑾 侯二秀 +1 位作者 董丹阳 王媛媛 《企业管理》 2020年第2期62-64,共3页
内蒙古蒙草生态环境(集团)股份有限公司(简称蒙草)是一家集种业科技和生态修复为一体的科技型企业。现蒙草已在新加坡、蒙古、俄罗斯、阿联酋等国家和地区建立起生态修复科研及草种业合作关系。
关键词 蒙草 创新生态系统 整合资源
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蒙草生态财务风险识别与防范 被引量:1
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作者 王梦 《中小企业管理与科技》 2022年第2期108-110,共3页
随着国家政策的调整,环保行业的发展越来越受到社会各界的重视。自2018年PPP模式进入“寒冬期”以来,环保行业遭遇发展矛盾期,相关企业出现了一定的财务风险。论文以蒙草生态——一家成立较早的环保类企业为研究对象,通过对其筹资、投... 随着国家政策的调整,环保行业的发展越来越受到社会各界的重视。自2018年PPP模式进入“寒冬期”以来,环保行业遭遇发展矛盾期,相关企业出现了一定的财务风险。论文以蒙草生态——一家成立较早的环保类企业为研究对象,通过对其筹资、投资、营运等方面的风险进行分析与识别,提出了防范财务风险的建议,以期帮助企业实现更好的发展。 展开更多
关键词 财务风险 环保企业 蒙草生态
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PPP 模式下蒙草生态财务风险管理研究
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作者 石敏毓 《山西农经》 2022年第21期145-147,153,共4页
PPP模式是生态修复行业政府和企业常用的合作模式。其高资金密集度、长周期的特点以及政府支付滞后性,使得企业出现较大财务风险,但鲜有文献关注如何管理及应对。文章运用Z-Score模型对内蒙古蒙草生态环境股份有限公司(以下简称蒙草生态... PPP模式是生态修复行业政府和企业常用的合作模式。其高资金密集度、长周期的特点以及政府支付滞后性,使得企业出现较大财务风险,但鲜有文献关注如何管理及应对。文章运用Z-Score模型对内蒙古蒙草生态环境股份有限公司(以下简称蒙草生态)参与PPP项目后财务风险状况及其成因进行分析发现,在参与PPP项目之后,财务风险较大。原因有蒙草生态参与的PPP项目资金回收期较长且项目收现能力较差,而企业对营运资金的管理效率较低;蒙草生态PPP模式下融资渠道单一等。对此,提出提高收现能力、拓宽融资渠道、合理搭配融资方式以及制订成本预算管理方案和建立项目绩效评价机制等解决方案。 展开更多
关键词 PPP模式 财务风险 Z-SCORE模型 蒙草生态
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四倍体杂交冰草新品种——蒙杂冰草1号的选育 被引量:14
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作者 于肖夏 姜志艳 +4 位作者 于卓 马艳红 云锦凤 苏和 张志成 《草业科学》 CAS CSCD 北大核心 2015年第5期738-744,共7页
将二倍体航道冰草(Agropyron cristatum cv.Fairway)与蒙古冰草(Agropyron mongolicum)进行种间远缘杂交获得的杂交种F1代种子,利用秋水仙碱诱导染色体加倍,通过选育得到四倍体杂交冰草优良新品系SZB-02,经品比、区域和生产试验,历时13... 将二倍体航道冰草(Agropyron cristatum cv.Fairway)与蒙古冰草(Agropyron mongolicum)进行种间远缘杂交获得的杂交种F1代种子,利用秋水仙碱诱导染色体加倍,通过选育得到四倍体杂交冰草优良新品系SZB-02,经品比、区域和生产试验,历时13年育成四倍体蒙杂冰草1号新品种。该品种为多年生疏丛型禾本科草本植物,须根系、植株生长整齐、叶长披针形、穗型较宽大。蒙杂冰草1号产量较高,年刈割两次的鲜草总产量平均为25 938.35kg·hm-2,干草产量平均为9 552.33kg·hm-2,种子产量平均为802.37kg·hm-2。其开花期粗蛋白质含量高达16.13%,并富含粗脂肪、无氮浸出物、钙和磷等营养成分,营养价值高;草质柔软、叶量大、适口性好,可青饲、放牧、调制干草等;发育前期耐低温能力强,生态适应性广,适宜于在≥10℃有效积温≥2 200℃·d的地区推广种植。 展开更多
关键词 航道冰 古冰 四倍体杂冰1号 选育 产量 营养品质
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共转化CBF4和bar基因蒙农杂种冰草植株的分子检测 被引量:3
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作者 王桂花 米福贵 +3 位作者 刘娟 霍秀文 杨宏雁 董淑君 《内蒙古大学学报(自然科学版)》 CAS CSCD 北大核心 2008年第1期61-65,共5页
在获得转CBF4和bar基因蒙农杂种冰草植株的基础上,应用PCR和Sou thern杂交技术检测外源基因在转基因蒙农杂种冰草植株中的整合及拷贝数.确定外源基因CBF4和bar基因已经整合到冰草基因组中,并且是以多拷贝的整合方式插入受体细胞的染色体... 在获得转CBF4和bar基因蒙农杂种冰草植株的基础上,应用PCR和Sou thern杂交技术检测外源基因在转基因蒙农杂种冰草植株中的整合及拷贝数.确定外源基因CBF4和bar基因已经整合到冰草基因组中,并且是以多拷贝的整合方式插入受体细胞的染色体上.说明外源基因对蒙农杂种冰草成功地进行了转化,可以作为后期转基因冰草植株研究及培育转基因冰草新品种的材料. 展开更多
关键词 CBF4基因 BAR基因 转基因农杂种冰植株 PCR SOUTHERN杂交
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A Dendroclimatic Study of Relic Picea meyeri in Inner Mongolian Steppe 被引量:6
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作者 梁尔源 邵雪梅 +1 位作者 胡玉熹 林金星 《Acta Botanica Sinica》 CSCD 2001年第3期288-294,共7页
Dendroclimatic methods were used to investigate the fundamental relationships between the temperature variables and the growth of climatically relic Picea meyeri Rehd. et Wils. on sandy land of Inner Mongolian gra... Dendroclimatic methods were used to investigate the fundamental relationships between the temperature variables and the growth of climatically relic Picea meyeri Rehd. et Wils. on sandy land of Inner Mongolian grasslands in the Xilin River Basin. The annual mean temperature and accumulated temperature (above 5 ℃, 10 ℃) respectively showed no significant correlation with the spruce growth relative to summer mean temperature, which displayed strong coherence with tree growth ( P <0.01). The mean temperature in May showed significantly negative correlation with spruce growth ( P <0.05). Furthermore, it was revealed that the negative influence of May temperature was due to monthly mean maximum temperature ( T max ) ( P <0.01) other than monthly mean minimum temperature ( T min ) values ( P <0.1), which indicated that the use of T min and T max separately can allow much more insights on the temperate influence. In addition, extreme maximum temperature in May and June might impose the most detrimental influence on tree growth in semi_arid Inner Mongolian grassland. The analysis of the recorded meteorological data demonstrated that the increases in temperature were synchronous with slight decreases in precipitation in the growing season, which suggested that P. meyeri may reduce growth due to temperature_induced drought. On the other hand, the analysis for decadal periods explored that trees appeared to reduce the sensitivity to the warming, and consequently increased sensitivity to rainfall. This may serve as a baseline for more accurate predictions of the potential impacts of altered climate regimes on tree growth. 展开更多
关键词 Picea meyeri DENDROCLIMATOLOGY temperature variables
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Seasonal Dynamics of Biomass under Different Land Use Patterns 被引量:3
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作者 徐霞 张智才 +1 位作者 张勇 田玉强 《Agricultural Science & Technology》 CAS 2010年第8期49-52,共4页
[Objective] The aim was to study seasonal dynamics of biomass under different land use patterns. [Methed] Aboveground biomass and underground biomass of plants under 3 different surface cover conditions of Stipa krylo... [Objective] The aim was to study seasonal dynamics of biomass under different land use patterns. [Methed] Aboveground biomass and underground biomass of plants under 3 different surface cover conditions of Stipa krylovii, Leymus chinensis and farmland were determined in growing season ( from May to October) of 2008. [ Result ] The aboveground biomass of Stipa krylovii, Leymus chinensis and farmland in August all reached the highest value, which of Stipa krylovii, Leymus chinensis and farmland was 287.91,117.05 and 193.59 g/m2, respectively. The total biomass of plant roots of the 3 plots in July all reached the highest value, which of Stipa krylovii, Leymus chinensis and farmland was 1 683.9, 1 601.9 and 513.9 g/m2, respectively. Leymus chinensis had the biggest biomass ratio of upper plant roots (0 - 15 cm) to lower plant roots (15 -30 cm), Stipa krylovii took second place, and farmland had the smallest one. ~ Conclusion The research provides theoretical basis for the ecological environment protection of ecological fragile area. 展开更多
关键词 Inner Mongolia grassland Land use patters BIOMASS Seasonal dynamics
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PhenylpropanoidGlycosidesandFlavonoidGlycosidesIsolatedfromBudsofBuddlejaoficinalisMaxim 被引量:10
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作者 张虎翼 潘竞先 《Journal of Chinese Pharmaceutical Sciences》 CAS 1996年第2期105-108,共4页
从醉鱼草属植物密蒙花的花蕾中分离得到6个苯丙素酚甙类成分,分别鉴定为verbas-coside(1),cistanosideF(2),β-hydroxyacteoside(3),poliumoside(4),echi... 从醉鱼草属植物密蒙花的花蕾中分离得到6个苯丙素酚甙类成分,分别鉴定为verbas-coside(1),cistanosideF(2),β-hydroxyacteoside(3),poliumoside(4),echinacoside(5),mar-tynoside(6).它们在体外实验中显示了一定的抗肿瘤活性。同时还分离得到两个黄酮甙:蒙花甙(7)和芹菜素-7-芦丁糖甙(8)。其中化合物(2),(3),(4),(8)为首次从醉鱼草属中分离得到。 展开更多
关键词 Buddlejaoficinalis Buddlejaceae Phenylpropanoidglycoside Flavonoidgly-coside
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王士禛词学研究述评 被引量:1
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作者 宫洪涛 《南阳师范学院学报》 CAS 2011年第10期90-94,共5页
王士禛是广陵词坛的总持,有词集《衍波词》、词话《花草蒙拾》、词选《倚声初集》,且支持孙默汇刻了《国朝名家诗馀》,并评点过邹祗谟、董以宁、梁清标等人的词集。当今学界主要从"词论"、"词作"和"词史地位&q... 王士禛是广陵词坛的总持,有词集《衍波词》、词话《花草蒙拾》、词选《倚声初集》,且支持孙默汇刻了《国朝名家诗馀》,并评点过邹祗谟、董以宁、梁清标等人的词集。当今学界主要从"词论"、"词作"和"词史地位"等三方面对王士禛的词学贡献进行论析,虽时有精辟之论,但也存在着一些不足,王士禛词学研究尚有拓展余地。 展开更多
关键词 王士禛 词学 衍波词 述评
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Vegetation landscape structure and dynamics in sandy forest-steppe ecotone
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作者 邹春静 韩士杰 +1 位作者 徐文铎 李道棠 《Journal of Forestry Research》 SCIE CAS CSCD 2003年第4期303-306,共4页
Sandy forest-steppe ecotone in Baiyinaobao Natural Reserve of Inner Mongolia Autonomous Region of China is one of the special landscape types in forest-steppe vegetation zone in China. Vegetation landscape types, land... Sandy forest-steppe ecotone in Baiyinaobao Natural Reserve of Inner Mongolia Autonomous Region of China is one of the special landscape types in forest-steppe vegetation zone in China. Vegetation landscape types, landscape patches, and patch size were measured by the field investigation, forest photograph, and airscape. The structure of landscape patches in sandy forest-steppe ecotone, including composition structure, and size structure, was studied and the dynamics and transformation of landscape patches were analyzed. The data obtained in this study could provide theoretical basis for the research on vegetation landscape in forest-steppe ecotones and other vegetation types. 展开更多
关键词 Vegetation landscape STRUCTURE DYNAMICS Sandy forest STEPPE ECOTONE
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Influence of Sulphur Fertilizer on Sulphur Cycling and Its Implications on Sulphur Fertilizer Requirement of Grazed Pasture in Warm Seasonal Rangeland of Nei Monggol Steppe of China 被引量:5
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作者 汪诗平 EwaldSCHNUG 等 《Acta Botanica Sinica》 CSCD 2002年第2期204-211,共8页
Sulphur (S) cycling and implications on S fertilizer requirement in sheep-grazed pastures receiving three levels of S fertilizer at rates of 0, 30 and 60 kg S/hm 2 in 1995 and 1996 were studied using a mass-balance a... Sulphur (S) cycling and implications on S fertilizer requirement in sheep-grazed pastures receiving three levels of S fertilizer at rates of 0, 30 and 60 kg S/hm 2 in 1995 and 1996 were studied using a mass-balance approach which accounted both for S inputs to and outputs from the soil-plant-animal system. Results indicated that S fertilizer increased by 50% of herbage S uptake and 15% or more of S bio-cycling rate in grazing system. The total S recovery of 30 and 60 kg S/hm 2 treatments from 1995 to 1996 was 74.0% and 37.6% respectively. Mineralization of organic S may be an important source of S for pasture when other S sources are low, accounted for 70% of the total S inputs without S fertilizer. The grazing sheep has an important ecological function, the feature of S cycling in grazed pastures was that 90% of herbage S ingested by grazing sheep was returned to soils as excreta. The amount of S released by sheep excreta accounted about 30% of the total released S through S bio-recycling. Loss from soil S leaching beyond the major plant rooting zone was the main S output from grazing system. However, urinary and fecal S losses, including transfer and leaching losses, also affected S budgets of grazing system. It is therefore important to investigate the recycling rate of both urinary and fecal S under field conditions. Based on the mass-balance principle, at least 10 kg S/hm 2 per year may be necessary for sustainable development of grazing system. 展开更多
关键词 sulphur fertilizer MASS-BALANCE sulphur cycling sheep-grazed system Nei Monggol steppe
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Further development and sustainable utilization mode of grassland tourism resources: a case study of Inner Mongolia Autonomous Region, China 被引量:3
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作者 Liu Min Liu Aili Chen Tian 《Ecological Economy》 2007年第2期190-201,共12页
Tourism resources are important foundation for the development of tourism industry.Grassland is not only a kind of important resource but also a great attraction to visitors.Therefore,the integrated development and su... Tourism resources are important foundation for the development of tourism industry.Grassland is not only a kind of important resource but also a great attraction to visitors.Therefore,the integrated development and sustainable utilization of grassland tourism resources are of great significance.This paper,based on the analysis of literatures and the current problems existing in grassland tourism,summarizes the speciality of grassland tourism development,deals nation as example and carries out empirical research.Based on the status quo of grassland tourism resources in Inner Mongolia,this study analyzes the characteristics of grassland tourism resources,the necessity and feasibility of integrated development,then proposes the following suggestions: idea for development,mode of development,regional cooperation,tourism products development,especially the three modes of development based on the resources conditions - the mode of relying on market,the mode of combination aggregation and the mode of relying on quality. 展开更多
关键词 Grassland tourism resources Integrated development Sustainable utilization Inner Mongolia autonomous region
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Effects of Grazing Exclusion on Soil Carbon and Nitrogen Storage in Semi-arid Grassland in Inner Mongolia, China 被引量:10
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作者 WU Xing LI Zongshan +4 位作者 FU Bojie LU Fei WANG Dongbo LIU Huifeng LIU Guohua 《Chinese Geographical Science》 SCIE CSCD 2014年第4期479-487,共9页
The semi-arid grasslands in Inner Mongolia, China have been degraded by long-term grazing. A series of ecological restoration strategies have been implemented to improve grassland service. However, little is known abo... The semi-arid grasslands in Inner Mongolia, China have been degraded by long-term grazing. A series of ecological restoration strategies have been implemented to improve grassland service. However, little is known about the effect of these ecological restoration practices on soil carbon and nitrogen storage. In this study, characteristics of vegetation and soil properties under continued grazing and exclusion of livestock for six years due to a nationwide conservation program—′Returning Grazing Lands to Grasslands(RGLG)′ were examined in semi-arid Hulun Buir grassland in Inner Mongolia, China. The results show that removal of grazing for six years resulted in a significant recovery in vegetation with higher above and below-ground biomass, but a lower soil bulk density and pH value. After six years of grazing exclusion, soil organic C and total N storage increased by 13.9% and 17.1%, respectively, which could be partly explained by decreased loss and increased input of C and N to soil. The effects of grazing exclusion on soil C and N concentration and storage primarily occurred in the upper soil depths. The results indicate that removal of grazing pressure within the RGLG program was an effective restoration approach to control grassland degradation in this region. However, more comprehensive studies are needed to evaluate the effectiveness of the RGLG program and to improve the management strategies for grassland restoration in this area. 展开更多
关键词 grazing exclusion soil carbon storage soil nitrogen storage grassland management Returning Grazing Lands to Grasslands(RGLG) program semi-arid grassland Hulun Buir grassland
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Field Studies of Frontal Area Index in Rangeland of Mongolia
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作者 Reiji Kimura 《Journal of Environmental Science and Engineering(A)》 2013年第6期359-363,共5页
Field observation was conducted at typical rangeland in Mongolia to examine the frontal area index. Frontal area index is the characteristics of surface roughness elements affecting sand transport. The frontal area wa... Field observation was conducted at typical rangeland in Mongolia to examine the frontal area index. Frontal area index is the characteristics of surface roughness elements affecting sand transport. The frontal area was strongly correlated with the effective shelter length on sand transport in both short grasses and shrubs. The frontal area index was 0.031 and the relationship between the roughness length and frontal area index in this site agreed with past studies. 展开更多
关键词 Arid region frontal area index roughness length Asian dust.
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Development, Institutional Changes, and the Power of Science in Baiyinxil Rangeland, IMAR
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作者 Sai Han 《Sociology Study》 2014年第7期592-600,共9页
Field research in this paper was carried out in Baiyinxil State-owned Rangeland (SOR), which is 55 kms southeast of Xilingol City in Xilingol League, Inner Mongolia Autonomous Region (IMAR). The area established t... Field research in this paper was carried out in Baiyinxil State-owned Rangeland (SOR), which is 55 kms southeast of Xilingol City in Xilingol League, Inner Mongolia Autonomous Region (IMAR). The area established the first grassland nature reserve in China as well as the first SOR in IMAR. By reviewing its 60 years of development, the paper analyzes local herders' ecological ideology (the cycle made of human-grassland-livestock and none of which could be neglected) and the modern nation-state's policy implementation in ecological resettlement, institutional changes, and livestock cross-breeding. The purpose of the research is to discuss three pairs of socio-ecological relationships in Inner Mongolia grassland: between population flow and regional development, traditional ideology and grassland management ideology, as well as the competition between local knowledge and modern science and technology. The author argues that grassland management is a cyclical process and the deterioration of grassland ecology in IMAR is simply a reflection of the imbalance of three key elements (human-institution-cattle) in maintaining grassland ecology. 展开更多
关键词 Ecological resettlement institutional changes livestock cross-breeding social development
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Climate change adaptation approaches with nomadic culture characteristics in Inner Mongolia grassland in China 被引量:2
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作者 Xiaojia He 《Chinese Journal of Population,Resources and Environment》 2017年第3期220-225,共6页
Climate change adaptation is an important part of addressing climate warming. Inner Mongolia grassland is a sensitive and vulnerable area of climate and an important region for adaptation to climate change. New climat... Climate change adaptation is an important part of addressing climate warming. Inner Mongolia grassland is a sensitive and vulnerable area of climate and an important region for adaptation to climate change. New climate change adaptation approaches with nomadic culture characteristics should be exploded in the context of climate warming. In this paper, the different utilization pattern of grassland in different regions, the different modes of production and management and historical culture were analyzed first in Nenjiang-West Liaohe plain and Ke'erqin region, Inner Mongolia Plateau and Ordos Plateau. Then, nomadic culture on the grassland was discussed from the productivity to biodiversity, from local livestock variety to resource-used system. Finally, new approaches of climate change adaptation with inheriting the essence of nomadic culture were proposed, including protecting biodiversity and using resources reasonably, performing a practice of grazing suspension-rotational grazing system,fencing degenerated grassland to facilitate its growth, founding new farming and husbandry system on the grassland, and establishing an incentive mechanism favorable to grassland and ethical cultural protection. 展开更多
关键词 Nomadic culture CLIMATECHANGE ADAPTATION grassland ecosystems grassland recovery BIODIVERSITY
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Effect of Nitrogen Fertilizer on Photosynthetic Rate of Leymus chinensis in Grassland of Different Degrading Degrees
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作者 王明铭 鲍雅静 +3 位作者 李政海 杨绍欢 焦静平 郭燕宇 《Agricultural Science & Technology》 CAS 2012年第9期1929-1932,1957,共5页
[Objective] This study aimed to investigate the effect of nitrogen fertilizer on photosynthetic rate of Leymus chinensis in the grasslands of different degrading degrees. [Method] With the L. chinensis in Inner Mongol... [Objective] This study aimed to investigate the effect of nitrogen fertilizer on photosynthetic rate of Leymus chinensis in the grasslands of different degrading degrees. [Method] With the L. chinensis in Inner Mongolia Baiyinxile Ranch as the research object, different rations of nitrogen fertilizer were applied to the grassland (0, 30, 50, 80 g/m^2). The effect of different gradients of nitrogen fertilizer on photo- synthetic rate of Leymus chinensis, and the effect on grasslands of different degrading degrees were analyzed. [Result] The photosynthetic rate of L. chinensis in- creased with the increase of nitrogen gradients; in the grassland communities with different degrading degrees, the responses of the photosynthetic rate of L. chinensis to nitrogen fertilizer were different, and the response in the grassland with severe degradation was the best. [Conclusion] Nitrogen fertilizer played an important role in enhancing the restoration degree of grassland. 展开更多
关键词 Leymus chinensis Nitrogen fertilizer Photosynthetic rate
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